Multibeam data (around Orca seamount in Bransfield strait) / 2020&21 season ANA11B

Since last year, the frequency of earthquakes has increased in the vicinity of Orca seamount in the Bransfield Strait. Accordingly, in order to confirm the change of the submarine topography due to the earthquake, a side line was set in the epicenter where earthquakes mainly occur and the area covering the Orca seamount, and multi-beam survey was conducted. The survey area shows a distribution of water depth of -300 to -2000m. The observation results that have been post-processed will be used as basic data to analyze geological and geophysical characteristics of the region in the future.